John booth



(.No Model.)

. J'. BOOTH.

BEARING FOR SPINDL'E'S. No. 272,942. Patented'Peb.27,1883.

tubes.

ilNtTED STATES PATENT OFFI E.

JOHN BOOTH, OF LINCOLN, RHODE ISLAND, ASSIGNOR TO STEPHEN A. JENKS, OF SAME PLACE.

BEARING FOR SPINDLES.

SPECIFICATION forming part of Letters Patent No. 272,942, dated February 27, 1883.

Application filed May 7, 1881. (No model.)

To all whom. it may concern Be it known that I, JOHN BOOTH, of Lincoln, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Bearings for Spindles; and I do hereby declare that the following specification, taken in connection with the drawings furnished and forming a part of the same, is a clear, true, and complete description of the several features of my invention.

The bearings for spindles to whichmy said improvements are applicable are of that class which embody a rigidly-mounted supportingtube, an inner tube or tubular bearing serving as a bolster-bearing, or sometimes as a combined bolster and step bearing, and an annular yielding cushion interposed between said Cushions of felt have heretofore been largely employed, and various forms of metallic cushions have been suggested, although I know of none that have been practically employed.

The several features of construction and combination believed to be novel will be fully described in detail, and specially designated in the several claims hereunto annexed.

Referring to the drawings, Figure 1 represents in vertical central section a Rabbeth spindle provided with my metallic cushion in theform deemed preferable by me. Fig. 2 represents in side view the inner or bolster tube of Fig. 1 detached. Fig. 3 represents in two side views the cushion, Fig. 1, detached. Fig. 4 represents in vertical central section a Rabbeth spindle provided with a cushion of form similar to that previously shown, but slightly modified in the arrangement of its bearingpoints. Fig. 5 is a side view and central sec tion of the metallic cushion or spring of Fig. 4; detached. Fig.6 is a vertical central section of what is known as the Mayor spindle provided with a cushion in accordance with my invention. Fig. 7 is a side view of the inner tube of Fig. 6 detached. Fig. 8 is aside view of the metallic cushion of Fig. 6 detached.

The sleeve-whirl spindles A and supportingtubes B are too well known to require detailed description, they being of the usual character and provided with an oil-tube, as heretofore. The inner tubes .a of the Rabbeth spindles and the inner tube a of the Mayor are as tube.

heretofore, except that each, at its upper end,

is provided with the recess b, which is occupied by an inwardly-bent portion of one of the springs c of the cushion O, and thereby prevented from rotation with the spindle.

The annular or tubular metallic cushion G is interposed between the inner and outer tubes. In the Rabbeth spindle it is possible to apply a cushion or series of springs which have three separate general points of bearing-one at each end and one midway. As shown in Figs. 1 and 3, the springs c at each end occupy a circular line, bear inwardly at top and bottom against the inner tube, and bear outwardly midway, at the horizontal line shown, against the inner surface of the outer or supporting tube. In Figs. 4 and 5 the several springs bear outwardly at top and bottom against the inner side of the outer or supporting tube, and midway they bear inwardly against the inner In both cases it will be seen that the required capacity for movement on the partof the inner tubular bearing is fully provided for, the top and bottom thereof being free to move laterally (within certain limits) in all directions. In Fig. l. the ends of the inner tube move to and fro laterally with the springs; but in Fig. 4 said tube moves independently of the several springs. I prefer the arrangement of bearing-points exhibited in Fig. 1.

In the Mayor spindle, Fig. 6, the double end bearing ofthe springs is not available, because of the presence on the inner tube of the swiveling ball, which occupies a suitable seat with in the supporting-tube. In a cushion, 0, for this form of spindle each spring 0 bears inwardly at its upper end, and is properly held at the lower end, because of the continuity .of the metal of which the several springs are composed, they being formed preferably of a fiat piece of sheet metal bent into the form of conical frusta, as shown, and they are forced into the outer tube while in position outheinner tube.

The other two cushions, Figs. 3 and 5, are

also preferably formed of sheet metal, slitted if no such vertical opening were provided. The union of the several springs, as described, firmly secures them in position with relation to each other, and either of the upper ends of the separate springs may therefore be relied upon for interlocking with the inner tube, as before described, for preventing its rotation. So far, however, as relates to the proper cushioning of the spindle, each of said springs may be wholly separate from the others without departing from my invention, and it is therefore to be understood that certain portions of my invention are not limited to springs which are united as shown and described, although the latter are deemed preferable by me in all cases. The springs or cushions may becomposed of any suitable metalsuch as steel or brass-although theycould be made of castiron turned to the Forms shown, and in proper proportions to admit of the proper reception of the inner tube and to properly fill the outer tube.

Having thus described my invention, 1 claim as new and desire to secure byLetters Patentl. The combination, with the spindle, the supporting-tube, and the inner tube, of a se ries ofvertical springs interposed between said tubes, substantially as described.

2. The combination, with the spindle, the supporting-tube, and the inner tube, of a series ofconnected vertical springs, substantial ly as described.

3. The combination, with a supporting-tube and a tubular bearing, of a tubular spring interposed between said tube and bearing, composed of suitable metal slitted from one or both ends to afford a seriesof springs occupying a circular line, substantially as described.

4-. A tubular spring provided with an inwardly-bent projection, in combination with the tubular spindle-bearing notch ed or recessed to receive said projection on the spring, and an exterior sup iorting-tube, substantially as described.

JOHN BOOTH.

Witnesses:

J. E. GOLDSWORTHY, W. H. 0. SMITH. 

